Nicosulfuron CAS:111991-09-4 CAS NO.111991-09-4

Active ingredient

Nicosulfuron

Chemical name

2-[[[[(4,6-dimethoxy-2-pyrimidinyl)amino]carbonyl]amino]sulfonyl]-N,N-dimethyl-3-pyridinecarboxamide

Classification

Herbicide / Agrochemical

Biochemistry

Branched chain amino acid synthesis (ALS or AHAS) inhibitor. Acts by inhibiting biosynthesis of the essential amino acids valine
and isoleucine, hence stopping cell division and plant growth. Maize selectivity derives from selective metabolism (P450-mediated
pyrimidine-5-hydroxylation, followed by conjugation with glucose).

Mode of action

Selective systemic herbicide, absorbed by the foliage and roots, with rapid translocation in xylem and phloem to the meristematic
tissues.

Usage

Selective post-emergence control in maize of annual grass weeds including Setaria, Echinochloa, Digitaria, Panicum, Lolium, and
Avena spp., broad-leaved weeds including Amaranthus spp. and Cruciferae, and perennials such as Sorghum halepense and Agropyron
repens. Applied at 35-70 g/ha.

Item

Standard

Test Results

Identification

A.H-NMR:Comply with the structure

Complies

B.LC-MS:Comply with the structure

Complies

C.The IR spectrum of sample should be identical with that of reference standard.

Complies

D.HPLC-ESI-MS

The retention time of the major peak in the chromatogram of the Assay preparation corresponds to that in the chromatogram of the Standard preparation, as obtained in the Assay.

Complies

Loss on drying

≤2.0%

0.19%

Heavy metals

≤10 ppm

<10ppm

Water

≤1.0%

0.1%

Sulphated ash

≤0.5% determined on 1.0 g.

0.009%

Residue on ignition

≤0.1%

0.03%

Related Substances

Unspecified impurities: for each impurity ≤0.10%

<0.10%

Total Impurity ≤0.5%

0.18%

Purity

≥99.0%

99.7%

Assay

99.0%~101.0% (anhydrous substance).

99.8%

Storage

Preserve in well-closed, light-resistant and airtight containers.

Complies